/********************************************************************************
* ReactPhysics3D physics library, http://www.reactphysics3d.com                 *
* Copyright (c) 2010-2022 Daniel Chappuis                                       *
*********************************************************************************
*                                                                               *
* This software is provided 'as-is', without any express or implied warranty.   *
* In no event will the authors be held liable for any damages arising from the  *
* use of this software.                                                         *
*                                                                               *
* Permission is granted to anyone to use this software for any purpose,         *
* including commercial applications, and to alter it and redistribute it        *
* freely, subject to the following restrictions:                                *
*                                                                               *
* 1. The origin of this software must not be misrepresented; you must not claim *
*    that you wrote the original software. If you use this software in a        *
*    product, an acknowledgment in the product documentation would be           *
*    appreciated but is not required.                                           *
*                                                                               *
* 2. Altered source versions must be plainly marked as such, and must not be    *
*    misrepresented as being the original software.                             *
*                                                                               *
* 3. This notice may not be removed or altered from any source distribution.    *
*                                                                               *
********************************************************************************/

#ifndef REACTPHYSICS3D_MATHEMATICS_COMMON_H
#define REACTPHYSICS3D_MATHEMATICS_COMMON_H

// Libraries
#include <reactphysics3d/configuration.h>
#include <reactphysics3d/decimal.h>
#include <cassert>
#include <cmath>

/// ReactPhysics3D namespace
namespace reactphysics3d {

// ---------- Mathematics functions ---------- //

/// Function to test if two real numbers are (almost) equal
/// We test if two numbers a and b are such that (a-b) are in [-EPSILON; EPSILON]
RP3D_FORCE_INLINE bool approxEqual(decimal a, decimal b, decimal epsilon = MACHINE_EPSILON) {
    return (std::abs(a - b) < epsilon);
}


}


#endif
